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Nature

Bull Shark

What is bull shark?

· James MacDonald

Key facts

Scientific name *Carcharhinus leucas*[1]
Classification Requiem shark[1]
Habitat Tropical to subtropical coastal waters[1]
Freshwater tolerance Can spend extended periods in rivers[1]
Common names Zambezi shark; Lake Nicaragua shark[2]
Description Short, blunt snout; stout body[1]

A bull shark is a species of requiem shark, scientifically named *Carcharhinus leucas*, that lives in tropical to subtropical coastal waters and can also tolerate freshwater, including rivers. It is known for a short, blunt snout, a stout body, and a reputation for aggression.

Context

The bull shark (*Carcharhinus leucas*) is a requiem shark that inhabits tropical and subtropical coastal waters worldwide, and it can also spend extended periods in rivers and other freshwater systems [1]. Its common name reflects its short, blunt snout and aggressive reputation [2]. Unlike most sharks, bull sharks can breed in freshwater environments, which is rare among marine species [3]. They are also known by regional names such as the Zambezi shark and the Lake Nicaragua shark [2]. Bull sharks have been implicated in attacks on humans, contributing to their notoriety [1].

Documented claims

  • The name 'bull shark' comes from its short, blunt snout and aggressive behavior. [2]
  • Bull sharks can live and breed in freshwater environments. [3]
  • Bull sharks have been known to attack people. [1]
  • Bull sharks are found worldwide in tropical and subtropical waters. [1]

Questions and answers

Are bull sharks aggressive?

Yes, bull sharks have a reputation for aggression and have been known to attack people [1].

Are there bull sharks in Canada?

The sources do not specify bull shark presence in Canada; they are generally found in tropical and subtropical waters worldwide [1].

What is the #1 deadliest shark?

The sources do not rank sharks by deadliness, but they note that bull sharks are known for aggression and attacks on people [1].

Is it safe to swim around bull sharks?

Bull sharks have been known to attack people, so caution is advised in areas where they are present [1].

Sources

  1. Bull Shark - Florida Museum of Natural History — floridamuseum.ufl.edu (retrieved August 3, 2026)
  2. The Bull Shark - Louisiana Fisheries - Fact Sheetswww.lsu.edu › seagrantfish › resources › factsheets › bullshark — lsu.edu (retrieved August 3, 2026)
  3. Bull Shark Facts & Conservation Info — nature.org (retrieved August 3, 2026)

Sources last checked August 3, 2026. · More in Nature